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Benedikt Meurer 6ef05c7850 [builtins] Turn EnqueueMicrotask into a dedicated builtin.
Inlining the EnqueueMicrotask logic into the various uses blows up the
snapshot size significantly. So instead of doing that we just turn the
operation into a dedicated builtin that we call from the various uses.
This still avoids the runtime function call overhead and maintains the
fast path without write barriers for the common case of the microtask
queue fitting into new space.

This also moves back the microtask helper CSA functions to the
specialized assembler.

Bug: v8:7253, chromium:799563
Change-Id: I2d24d0e5c01e442c5ad7f5d4373fbc6e94351ac5
Reviewed-on: https://chromium-review.googlesource.com/856618
Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Commit-Queue: Benedikt Meurer <bmeurer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#50461}
2018-01-09 18:16:09 +00:00
benchmarks Fix common misspellings 2017-08-02 09:35:28 +00:00
build_overrides Remove build_override for macOS min SDK and deployment target. 2017-07-14 18:24:44 +00:00
docs [Docs] Removed unused docs because they are moved to GitHub 2015-11-19 10:23:30 +00:00
gni [gn] do not hide symbols for monolithic build. 2018-01-05 16:11:55 +00:00
gypfiles [build] Add generic num fuzzer isolates 2017-11-10 14:26:48 +00:00
include [snapshot] support attaching arbitrary v8::Data. 2018-01-09 12:06:40 +00:00
infra Add LUCI config checks to V8 presubmit 2018-01-09 17:50:14 +00:00
samples [cleanup] use unique_ptr for the DefaultPlatform 2017-11-14 09:57:18 +00:00
src [builtins] Turn EnqueueMicrotask into a dedicated builtin. 2018-01-09 18:16:09 +00:00
test Support Function::SetName() with --harmony-function-tostring 2018-01-09 18:13:09 +00:00
testing Use GTEST_LANG_CXX11 in V8 2016-07-25 13:06:42 +00:00
third_party Update third_party/binutils version to match Chromium. 2017-12-08 07:28:26 +00:00
tools [test] Use analysis flag in gc fuzzer. 2018-01-09 17:51:19 +00:00
.clang-format [clang-format] Don't derive pointer alignment 2017-01-17 09:28:19 +00:00
.editorconfig Add .editorconfig 2017-07-28 13:39:24 +00:00
.git-blame-ignore-revs [build] Add DEPS formatting to hyper-blame 2017-10-09 14:08:45 +00:00
.gitignore [test] Remove promises-aplus test suite 2017-12-19 09:29:26 +00:00
.gn For building v8 using gn on aix_ppc64, linux_s390x and linux_ppc64(both LE and BE). 2017-05-12 01:35:09 +00:00
.vpython Add a comment for the VPython dep 2017-10-25 12:23:35 +00:00
.ycm_extra_conf.py [ycm] Switch from gnu++11 to gnu++14 2017-11-27 07:48:21 +00:00
AUTHORS [builtins] Port Proxy.revocable() to CSA 2018-01-07 10:20:13 +00:00
BUILD.gn [builtins] Port Proxy.revocable() to CSA 2018-01-07 10:20:13 +00:00
ChangeLog [tools] Merge ChangeLog from latest release 2017-12-19 12:30:56 +00:00
CODE_OF_CONDUCT.md Explicitly state that the Chromium Code of Conduct also applies to V8 2016-03-02 09:51:24 +00:00
codereview.settings Make Gerrit the default code review for V8 2017-06-30 17:37:37 +00:00
DEPS [wasm] Update spec tests. 2018-01-09 15:58:51 +00:00
LICENSE Updates to the license information of third party components. 2015-06-16 12:37:50 +00:00
LICENSE.fdlibm Add LICENSE.fdlibm for all the fdlibm imported sources. 2016-06-09 07:17:03 +00:00
LICENSE.strongtalk Add LICENSE.v8, LICENSE.strongtalk and LICENSE.valgrind to the v8 2011-02-03 07:10:06 +00:00
LICENSE.v8 Add LICENSE.v8, LICENSE.strongtalk and LICENSE.valgrind to the v8 2011-02-03 07:10:06 +00:00
LICENSE.valgrind Add LICENSE.v8, LICENSE.strongtalk and LICENSE.valgrind to the v8 2011-02-03 07:10:06 +00:00
Makefile [test] Continued test support for make targets 2017-10-20 15:01:51 +00:00
Makefile.android [build] Fix d8-for-Android builds 2016-05-20 12:10:45 +00:00
OWNERS Add myself to OWNERS to be able to approve/make infra-related changes 2017-11-09 22:52:19 +00:00
PRESUBMIT.py Replace all tryserver.v8 entries with corresponding LUCI bucket 2017-12-22 14:39:42 +00:00
README.md [Docs] Removed unused docs because they are moved to GitHub 2015-11-19 10:23:30 +00:00
snapshot_toolchain.gni MIPS[64]: Generate snapshots on MIPS big-endian targets 2017-11-24 19:00:32 +00:00
WATCHLISTS Add adamk to a few WATCHLISTS 2017-11-10 21:38:29 +00:00

V8 JavaScript Engine

V8 is Google's open source JavaScript engine.

V8 implements ECMAScript as specified in ECMA-262.

V8 is written in C++ and is used in Google Chrome, the open source browser from Google.

V8 can run standalone, or can be embedded into any C++ application.

V8 Project page: https://github.com/v8/v8/wiki

Getting the Code

Checkout depot tools, and run

    fetch v8

This will checkout V8 into the directory v8 and fetch all of its dependencies. To stay up to date, run

    git pull origin
    gclient sync

For fetching all branches, add the following into your remote configuration in .git/config:

    fetch = +refs/branch-heads/*:refs/remotes/branch-heads/*
    fetch = +refs/tags/*:refs/tags/*

Contributing

Please follow the instructions mentioned on the V8 wiki.